Planet GS-5220 Series User Manual page 226

A port transitions from one state to another as follows:
From initialization (switch boot) to blocking

From blocking to listening or to disabled

From listening to learning or to disabled

From learning to forwarding or to disabled

From forwarding to disabled

From disabled to blocking

You can modify each port state by using management software. When you enable STP, every port on every
switch in the network goes through the blocking state and then transitions through the states of listening and
Figure 4-7-1: STP Port State Transitions
226
User's Manual of GS-5220 LCD Series